First three digits · Kentucky
ZIP Codes Starting with
12 ZIP codes start with 426, sorted at the Knoxville, TN (SCF 377) sectional center (USPS labeling list L005, effective October 1, 2026) in Kentucky: 12 residential ZIP codes across 4 counties (Census 2020 ZCTAs and GeoNames postal codes, October 2026).
What do the digits 426 mean?
The first digit, 4, is one of ten national areas (Indiana, Kentucky, Michigan and Ohio). The first three, 426, route mail to a sectional center: USPS labeling list L005 (effective October 1, 2026) sends letters for 426 to the Knoxville, TN (SCF 377) facility. The last two digits pick the delivery area. By residents, the largest town names among the 426 ZIP codes are Monticello, Russell Springs, Albany, Jamestown, Pine Knot and Whitley City.
The same facility sorts 10 prefixes, 340 ZIP codes in all: 377, 378, 379, 407, 408, 409, 417, 418, 425, 426.
Where are the 426 ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All ZIP codes starting with 426
| County | ||||||
|---|---|---|---|---|---|---|
| 42602 | Albany | Clinton County | 8,948 | 47 | $44k | $124k |
| 42603 | Alpha | Wayne County | 694 | 61 | $53k | $73k |
| 42629 | Jamestown | Russell County | 5,152 | 51 | $37k | $168k |
| 42631 | Marshes Siding | McCreary County | 66 | 508 | – | – |
| 42633 | Monticello | Wayne County | 18,606 | 44 | $46k | $139k |
| 42634 | Parkers Lake | McCreary County | 1,646 | 19 | $31k | $69k |
| 42635 | Pine Knot | McCreary County | 4,736 | 188 | $24k | $91k |
| 42638 | Revelo | McCreary County | 235 | 207 | $12k | $28k |
| 42642 | Russell Springs | Russell County | 13,459 | 96 | $53k | $153k |
| 42647 | Stearns | McCreary County | 3,349 | 24 | $32k | $81k |
| 42649 | Strunk | McCreary County | 2,003 | 27 | $38k | $98k |
| 42653 | Whitley City | McCreary County | 4,300 | 53 | $43k | $109k |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; GeoNames postal codes (CC BY 4.0) for codes without a residential area.